So cloud iridescence usually happens in lenticular or alto-cumulus, cirrus and cirrocumulus clouds. "In the case from this week in Northern Virginia, what happened was that a pileus cloud ...

This photo was taken in August in Pu’er, Yunnan Province, China. Experts say it is “an iridescent pileus cloud” and not a UFO. Facebook screengrab/Jiaqi Sun (孙嘉琪） A towering halo ...

The phenomenon was the result of the pileus cloud - sometimes known as a 'cap cloud' or 'scarf cloud' - forming just at the right time of the evening to produce 'cloud iridescence' - or a rainbow ...

That pileus was the reason the rainbow cloud occurred, The Washington Post reported. “We called them ‘rainbow clouds’ but we understand they are also called ‘iridescent’ clouds with ...

A stunning cloud iridescence created a bright silhouette above the mountains in the Philippines. Footage shows the optical ...

An incredible scarf cloud danced above a town in southern China earlier this week. Here’s how this stunning cloud got its rainbow hue. A town in southern China witnessed a once-in-a-lifetime ...

What caused these beautiful, iridescent clouds in Sweden? And what makes them so special and rare? Harry Enten runs the numbers on competitive race for House seat in Florida Dodgers Gave Tigers ...

0:52 Iridescent clouds bring rainbows to sunny skies for parts of southwest B.C. A beautiful optical phenomenon was spotted across the South Coast Tuesday afternoon as residents were treated to a ...

"I'll always remember the first time I saw those iridescent clouds and was sure at first it was some color artifact." What do clouds on Mars look like? Well, a new video stitched together from ...